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<head>
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    <title>Document</title>
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    <style>
        *{
            margin: 0px;
            padding: 0px;
            box-sizing: border-box;
        }
    
        ul {
            padding: 0px;
            background-color: black;
            padding-inline-start: 0px;
            margin-block-start: 0px;
            margin-block-end: 0px;
        }
    
        li {
            display: inline-block;
            color: white;
            background: pink;
            list-style: none;
        }
        li:hover{
            background-color: #333;
        }

        a{
            display: block;
            padding: 20px;
            text-align: center;
        }
    
        .border{
            /* border-width: 2px;
            border-color: brown;
            border-style: solid; */
            border: 10px red solid;
            width: 200px;
            height: 300px;
            margin: 20px;
            background-color: bisque;
        }
    </style>
</head>

<body>
    <ul>
        <li><a>首页</a></li>
        <li><a>动态</a></li>
        <li><a>相册</a></li>
    </ul>

    <div class="border">


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</body>


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